WinGtkUtil.cxx File Reference

Windowing utilities. More...

#include "rnr/rnrconfig.h"
#include "rnr/log.h"
#include "opencv/cv.h"
#include "opencv/highgui.h"
#include "rnr/rnrWin.h"

Go to the source code of this file.

Functions
void	ApplyColorGradient (IplImage *pImg, int red, int green, int blue)
	Apply color gradient to image. More...

Detailed Description

Windowing utilities.

LastChangedDate

2013-05-03 07:45:13 -0600 (Fri, 03 May 2013)

Rev

2904

Author

Robin Knight (robin.nosp@m..kni.nosp@m.ght@r.nosp@m.oadn.nosp@m.arrow.nosp@m.s.co.nosp@m.m)

Daniel Packard (danie.nosp@m.l@ro.nosp@m.adnar.nosp@m.rows.nosp@m..com)

Copyright

© 2011-2017. RoadNarrows LLC.
http://www.roadnarrows.com
All Rights Reserved

Definition in file WinGtkUtil.cxx.

Function Documentation

void ApplyColorGradient	(	IplImage *	pImg,
		int	red,
		int	green,
		int	blue
	)

Apply color gradient to image.

The gradient ranges from black to the given color, given the intensity of each pixel in the unaltered image.

Parameters

[in,out]	pImg	Pointer to image to change.
	red	8-bit red component of RGB.
	green	8-bit green component of RGB.
	blue	8-bit blue component of RGB.

Definition at line 78 of file WinGtkUtil.cxx.

{
  CvScalar  s;
  CvScalar  t;
  double    intensity;

  for(int i=0; i<pImg->width; ++i)
  {
    for(int j=0; j<pImg->height; ++j)
    {
      s =cvGet2D(pImg, i, j);
      intensity =  ((((byte_t)s.val[0]) & 0xff) << 16) |
                ((((byte_t)s.val[1]) & 0xff) << 8) |
                (((byte_t)s.val[2]) & 0xff);
      intensity /= (double)(0x00ffffff);
      t = cvScalar(blue*intensity, green*intensity, red*intensity);
      cvSet2D(pImg, i, j, t);
    }
  }
}